Hoisting device



S. M. NAMPA HOISTING DEVICE NoY. 9, 1937.

Original Filed Nov. 2,1952

`Salo /)7. 427274.

A T T ORNE V5.

Patented Nov. 9, 1937 UNITED STATES- HOISTING DEVICE Sulo M. Nampa,Detroit, Mich., assignor to The Worth Company, a corporation of MichiganOriginal application November 2, 1932, Serial No. 640,798. Divided andthis application July 6,l 1936, Serial No. 89,107

.2` Claims.

The invention relates to power devices for loading automobiles infreight cars and constitutes a division of my copending applicationSerial No. 640,798, filed November 2, 1932.

The object of the invention is to provide an efcient, light, andinexpensive power means adapted to be used for the purposes above setforth in connection with the decking of the automobile.

Other objects of the invention will become apparent from the followingdescription relating to a particular embodiment of the invention, andthe claims hereinafter set forth.

Figure 1 is a fragmentary view of a freight car illustrating use of oneform of the invention;

Fig. 2 is a detail View on a larger scale taken substantially along line2-2 of Fig. 1;

Fig. 3 is a View on a larger scale taken substantially along line 3-3 ofFig. l;

Fig. 4 is a cross-sectional view on a larger scale taken substantiallyalong line 4-4 of Fig. 3.

Referring to Fig. l, the loading frame is indicated at I0, frontsupporting rods pivotally connected to the frame and car at I l and reartelescopic rods pivotally connecting the frame and car at I2. The frameis adapted to swing from the floor to a semi-decking position and evenbeyond this position, to a position adjacent the roof. When the frame isin its semi-decking position, it may be supported by front brace rods 20and rear brace rods 2 l.

For raising the frame, fiexible members such as steel cables 3|] aresecured at one end to opposite sides of the frame l respectively, asindicated at 3l, and extend upwardly where they are trained over rollers32 journalled in brackets-secured to the roof of the car. The cablesthen extend toward the end wall of the car along the roof and at theupper edge of the end wall, they are wound around a pair of drums 32secured to opposite ends of a shaft 33 that in turn is journalled inbrackets 34 secured to the car at the upper edge of the end wall. Theend of that portion of each cable wound around its respective drum, ispositively secured to the drum at one point to prevent possibleseparation of the cable from the drum.

One end of the shaft has a worm wheel 36 secured thereto, which mesheswith a worm 31 secured on a stub-shaft 38 also journalled in one of thebrackets 34. The stub-shaft 38 also is provided with a sprocket wheel 39and an endless chain 40 is trained about the sprocket wheel and extendsdownwardly along the end wall of the carto a point convenient formanipulation of the chain to turn the sprocket wheel and hence `theshaft 33 ycarrying Vthe drums. The Worm and worm wheel connection are ofsuch character that they lock the rotary parts against accidentalrotation and it is necessary to move the chain 40 in one direction orthe other in order to cause rotation of shaft 33.

While manual manipulation of the chain 40 for the purpose of raisingtheframe is very effective, and an operator does not have to exert anexcessive force, it will be appreciated that the sprocket wheel 39 willhave to be rotated a large number of times in order to effect sufficientrotation of the shaft 33 to raise the frame. This requires some time andfurthermore requires the operator to repeatedly exert the force requiredto pull the chain. In order to expedite raising of the frame, powermeans of transportable character are provided for moving the chain andthus turning the sprocket Wheel 39. This power means is illustrated inFig. 1, and comprises a motor frame 45 which may have arms 46 and 41projecting from diametrically opposite sides thereof, and one of whichpreferably is adapted to rest on the floor of the freight car. Thesearms facilitate manual holding of the motor in position. The motor mayconstitute part of an electrical drill equipment in which, as shown byFig. 4, the shaft of the motor has a tapered socket 41 and a slot 48 inthe base of the socket.

The drill of the drill mechanism may also be employed and the taperedshaft portion of this drill is indicated at 49 and it will be noted thatthe drill has a reduced portion 5l] at its inner end adapted to projectinto the slot 46, thus positively locking the shaft of the motor withthe drill for simultaneous rotation. Instead of providing on theopposite end of the drill, a drill element which ordinarily isoppositely tapered, this oppositely tapered portion is turned down toprovide a cylindrical portion 50 threaded at its outer end as indicatedat 5l, and a reduced pin portion 52. The cylindrical portion 50 isadapted to receive a sprocket wheel 53 which may be keyed thereto asindicated at 54 and for holding the sprocket wheel in position, a nut 55may be threaded on the threaded portion 5| and against the Wheel. Thesprocket wheel 53 is adapted to t between the sides of the chain 4U atthe lower end of the latter and to rotate thus driving the chain androtating the upper sprocket wheel 39. The pin portion 52 of reducedcharacter, is adapted to fit into a metal pilot 56 fastened in the endwall of the carin such position that when the sprocket wheel is disposedin driving relation to the lower end of the chain, the pin ts into thepilot although it will be appreciated that the pin must rotate in thepilot. The pilot serves as a guide and centering means for the powermeans and greatly assists in the positioning thereof during itsoperation.

The motor, of course, operates at a fairly high rate of speed and,accordingly, very little time is required to revolve the chainsufficiently to raise the frame I0 to the positiondesired whether it beto the semi-decking position or to a position adjacent the roof of thecar. obviously can be readily separated from the chain and the car, thusavoiding carrying any equipment that would be in the way. Furthermore,one of the powerv means can be used for loading any number of freightcars, thusavoiding the use of power means in each car for each loadingdevice.

Although only one form of the invention has been described andillustrated, it will be appreciated by those skilled in the art thatvarious modi- The power means cations may be made without departing fromthe scope of the claims.

What I claim is:

1. A transportable power device for use in conjunction with freight carloading devices comprising a motor, a shaft driven by the motor, a powersheave on the shaft, and pilot means on the end of the shaft beyond thesheave and adapted to cooperate with a stationary pilot means foranchoring the device during use.

2. A transportable power device for use in conjunctionwith freight carloading devices, comprising a motor, a shaft driven by the motor, apower sheave on the shaft, pilot means on the end of the shaft beyondthe sheave and adapted to cooperate with stationary pilot means foranchoring the device during use, and an anchoring leg operativelysecured to the motor and adapted to cooperate with a stationarysupporting surface.

SULO M. NAMPA.V

